Bag-machine.



W. LIDDELL.

BAG MACHINE.

APPLICATION FILED JUNE 26, 1907.

Patented Dec. 14, 1909.

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BAG MACHINE.

APPLIGATION FILED JUNE 26, 1901.

Patented Dec. 14, 1909.

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- BAG MACHINE.

- Amman 943,427. Q ION FILED JUNE 26 190-1 Patented Dec. 14, 1909 3 SHEBTS-SHBET 3.

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WILLIAM LIDDELL, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO SIMPLEX BAG COMPANY OF LONG ISLAND CITY, A CORPORATION OF NEW YORK.

BAG-MACHINE.

Specification of Letters Patent.

Application filed June 26, 1907.

Patented Dec. 14:, 1909.

Serial No. 380,936.

To all whom it may concern:

Be it known that I, TILLIAM LIDDELL, a citizen of the United States, and resident of the borough of Brooklyn, county of Kings, city and State of New York, have made a certain new and useful Invention Relating to Bag-Machines, of which the following is av specification, taken in connection with the accompanying drawings.

This invention relates to bag machines and relates especially to mechanism for forming the diamond fold in self opening bags having satchel bottoms produced from bellows folded bag tubes.

In the accompanying drawings showing an illustrative embodiment of this invention, in which the same reference numeral refers to similar parts in the several figures, Figure 1 is a longitudinal sectional view. Figs. 2, 3, and at are partial longitudinal sectional views showing the mechanism in difierent positions. Fig. 5 is a transverse sectional view. Fig. 6 is a similar partial view. Fig. 7 is a transverse sectional view showing details of the machine in connection with Fig. 6.

The previously formed and pasted bag tube 52 having bellows folds 59 on either side of the same, as indicated in Figs. 1 and 7 is fed along the guide 8% by suitable mechanism, so that the separate severed sections of the bag tube are properly engaged by the opening rolls 1, 2. These rolls may be provided with pivoted grippers 23, 37, shown more in detail in Fig. 2. The gripper rod 61 may be mounted in the opening roll 2 and may be provided with one or more grippers 23, a pair of grippers being preferably mounted at a suitable distance apart, as is indicated in Fig. 5. On the outer end of this gripper rod the arm 36 may be mounted so as to cooperate with a cam 39 at such times as to raise the gripper and then releasing it to allow the gripper spring 38 to close the same and engage the bag lip projecting from the bottom of the bag tube be tween the slits usually formed therein. As indicated in Figs. 2 and 5, the gripper 37 may be mounted in a suitable recess in the roll 1 on a suitable rod and operated in a bag flap 5 i where the pasted seam has just been formed along the top of the bag tube. The continued rotation of the opening rolls from this initial gripping position indicated in Fig. 2 still further opens up the bag end the creasers 6O thereupon forming the initial transverse crease and the bag lip may be transferred from engagement with the gripper 23 on the opening roll to a suitable clip mounted in a feeder which may be in the form of a rotary disk 3 engaging the opening roll 2 and moving at substantially the same peripheral speed. This clip 25 may be mounted upon the rod 7 5 extending through the feeder and through the cooperating guiding arm 77 on the feeder shaft 81. A suitable torsional spring 43 tends to normally hold the clip 25 in closed position adjacent the disk feeder 3 while the clip cam 4,6 mounted in the path of the clip roll 17 is engaged thereby at a suitable time so as to bring this clip into the open position shown in Fig. 7. At that time the gripper 23 has been released and the bag lip 58 is thus released from engagement with the opening roll 2 and gripped between the clip 25 and the feeder 3 and carried along around the periphery of this feeder which may be made sufficiently narrow to enter the bag between the adjacent lateral edges of its bottom.

tVhen the lip and flap have been extended so that the bellows fold has been opened out at the bottom of the bag, suitable tuckers may be provided to enter and properly form the side tucks 76 of the diamond fold. These tuckers may be in the form of rotary oscillating blades 24 mounted on the tucker rods in suitable bearings in the opening rolls and are preferably raised from their inoperative position within the cylinders formed by extending the opening rolls, into their active tucking position in which the blades project out beyond the roll treads. This may be effected by mounting the tucker rods so as to have longitudinal movement in their bearings and providing the tucker springs 29 so as to normally draw the tuckers inward in a substantially radial direction and at the same time swing their tucking edges apart. When, however, the lifters which may be in the form of the pivoted levers 31 and provided with the pins 32 in their ends, move into such position that these pins engage the cams 33, the lifters are raised and the tucker rods and tuckers forced substantially radially out ward beyond the roll treads and thereupon the tuckers engage the tucking cams 4:9 and are simultaneously swung together so as to enter and accurately form the side tucks 76 in the diamond fold. As is indicated in Fig. 5, the tuckers may enter the bag tube as far as the top and bottom edges 55, 57 in the completed bag bottom, the parts being under these conditions in the relative position shown in Figs. 3 and 5.

If desired, suitable folders may be employed to accurately form the diamond fold and its various folded elements. These folders may be mounted upon the feeder by providing a suitable folder rod 83 passing through the feeder and suitable cranks l5 on the feeder shaft 81. The arms 41, preferably having a curved form as indicated, may be secured to the folder rod, as is also the folder roll 42 which cooperates with the folder cam 13. The folder springs 4% may be employed to normally rotate the. folder rod and the plurality of folder arms which are preferably employed so as to bring each of the folders 26 located on either side of the feeder 3 into forcible engagement with the diamond fold for the purpose of forming the same. These folders are preferably formed of some resilient yielding material of the desired weight, such as leather or the like, and the folder arms may also be made of resilient metal so that when the folder roll T2 passes over the end of the cam 48 the springs ist bring the folders into forcible yielding contact with the bag bottom, as is indicated in Fig. 4, so as to quickly and definitely form the diamond fold and its component side tucks 76 as far as the tuck bottoms 56, the weight of the folders and operating parts being such as to give the desired force of impact without straining or tearing the bag material used. The folder arms maybe constructed so that the springs 1st bring these arms into engagement with the feeder shaft 81, the folders subsequently rotating substantially in unison with the feeder so as to exert a yielding pressure and feeding action on the bag bottom in connection with the opening roll 2, the gripper 37 being, of course, released shortly after the parts have assumed the position indicated in Fig. 4.

If desired, the gripper 37 may be formed with a face of slightly corrugated form, the cooperating face of the opening roll 1 being similarly corrugated so as to give an indenting or impaling action to this gripper and increase its holding action on the bag flap 54. Also since the bag material is likely to separate somewhat along this newly formed seam, these corrugations are preferably formed parallel to the seam so as to more effectually prevent the opening thereof. If desired also, a separate retainer may be provided to engage the bag flap and reinforce the gripping action of this gripper, an impaling retainer being preferably employed so as to have a piercing or indenting action on the bag flap or seam and prevent the sep aration of the seam laps. The retainer 129 maybe provided for this purpose and formed so as to have the desired impaling action, that is, to pierce or indent the bag flap, the cooperating portion of the opening roll being, of course, formed with suitable corresponding slots or corrugations. This retainer may be mounted in the retainer arm 28 secured to the retainer rod 82 supported in suitable bearings in the machine frame and provided with a torsional spring 50, if desired. The retainer roll 62 also secured to the rod co operates with a suitable retainer cam which may be mounted 011 the feeder shaft 81 so as to cause the retainer to move upward with substantially the same speed as the bag flap and exert its impaling action thereon and thereafter when the gripper 37 has been released this impaling retainer may move downward at the desired speed and hold the bag flap in extended position during this time, the retainer having, of course, a piercing action and projecting through the bag flap to the desired distance, or being of a suitable resilient character so as to maintain its desired gripping engagement with the bag flap as long as considered necessary.

After the diamond fold has been completed as described the bag may be fed forward by the feeder and the cooperating roller 4.- below,.and fed along the guide through the forwarding rolls 5, 6 and between the guides 86, 87, the latter being mounted on a suitable transverse rod 67 as indicated in Fig. 1.

Vhile it is, of course, understood that after completing the diamond fold the bag bottom may be pasted and closed in any desired way, the drum 8 may, if desired, be employed for this purpose. This drum may be formed with suitable clamps 69 cooperating with its peripheral surface and these spring clamps may be opened by engaging a cam 70 so as to grip the bag bottom and hold the bag in proper alinement with respect to the drum. The oscillating pastel"? mounted on the shaft 63 and oscillated thereby may carry paste from a suitable paste roll (36 and distribute this paste by the parallel pasting flanges 65 upon the proper portions of the bag bottom, suitable indenters 6% being also preferably mounted on the pastel 7 so as to form transverse indentations at the top and bottom edges 55, 57 of the completed bag, these indenters acting in conjunction with the indenting grooves 68. The oscillating top closer 9 may be mounted on the oscillating arm 71 operated in any desired way and carrying the connector 74: to the end of which the closer is secured. This closer is advanced at a speed greater than the peripheral speed of the drum and throws l the top flap forward into contact with the bag bottom, the fold taking place along the top edge 55 which has been previously indented. Thereafter as the bag is fed along the guide 73 and under the bottom closer 72, the latter acts upon the bag lip 58 and turns the same back upon the bag bottom, the fold taking place along the bottom edge 57 where the indentation has been made. The bag then passing through the sealing rolls 10, 11, the pasted parts of the bag bottom are firmly pressed together and sealed.

The various elements of the machine may be operated in unison by the gearing shown, the opening rolls being geared together by the spur gears 12, 13, the gear 13 meshing with the intermediate gear 14 engaging the gear 15 driving the roller 4. The gear 15, as indicated in Figs. 1 and 5, meshes with the gears 16 and 17, the gear 17 driving the meshing gears 18, 19 for the forwarding rolls and also meshing with the gear 20 of the drum. This drum gear 20 may drive the meshing gears 21, 22 for the sealing rolls if desired, the parts being, of course, mounted on a suitable rigid frame comprising the side members 51.

Having described this invention in connection with an illustrative embodiment thereof, to the details of which disclosure the invention is not, of course, to be limited, what is claimed as new and what is desired to be secured by Letters Patent is set forth in the appended claims.

1. In bag machines, cooperating opening rolls to receive a bag tube and having creasers to form the initial crease therein, springpressed pivoted impaling grippers mounted in said opening rolls to engage and hold the bag lip and flap, tuckers, tucker rods secured to said tuckers and mounted on said opening rolls, means to project said tuckers beyond the treads of said rolls and means to cause said tuckers to simultaneously approach each other and enter the side tucks of the diamond fold, a disk feeder cooperating with said opening rolls, a clip mounted on said feeder to engage the bag portion released by one of said grippers, a pivoted impaling retainer cooperating with one of said opening rolls, a cam and connections to cause said retainer to engage the bag seam and prevent opening thereof and to move substantially in unison therewith, a folder rod mounted on said feeder, spring-operated resilient folder arms mounted on said folder rod and yielding folders mounted on said arms and operating on either side of said feeder, a folder roll and cam to operate said folders and complete the diamond fold when engaged by said tuckers, said resilient folders feeding forward the bag tube in connection with said feeder and cooperating opening rolls, a drum having clamping means thereon to engage the bag bottom and maintain the alinement thereof, pasting and indenting means cooperating with the bag bottom, an oscillating and a station ary closer to fold the bag flap and lip, and means to seal the bag bottom in position.

2. In bag machines, cooperating opening rolls to receive a bag tube and having means to form the initial crease therein, spring pressed pivoted impaling grippers mounted in said opening rolls to engage and hold the bag lip and flap, tuckers, tucker rod ssecured to said tuckers and mounted on said opening rolls, means to intermittently project. said tuckers beyond the treads of said rolls and means to cause said tuckers to simultaneously approach each other and enter the side tucks of the diamond fold, a disk feeder cooperating with said opening rolls, a clip mounted on said feeder to engage the bag portion released by one of said grippers, an impaling retainer cooperating with one of said opening rolls and means to cause said retainer to engage the bag seam and prevent opening thereof and to move substantially in unison therewith, a folder rod mounted on said feeder, spring-operated resilient folder arms mounted on said folder rod and yielding folders mounted on said arms to operate on either side of said feeder, means to operate said folders and complete the diamond fold when engaged by said tuckers, said folders feeding forward the bag tube in unison with said feeder and cooperating opening rolls, a drum having clamping means thereon to engage the .bag bottom and past ing, indenting, folding and sealing means to seal the bag bottom in position.

3. In bag machines, cooperatingopening rolls to receive a bag tube, grippers mounted in said opening rolls to engage and hold the bag lip and flap, tuckers, tucker rods secured to said tuckers and mounted on said opening rolls, means to intermittently project said tuckers beyond the treads of said rolls and means to cause said tuckers to simultaneously enter the side tucks of the diamond fold, a disk feeder cooperating with said opening rolls, means on said feeder to engage the bag seam and prevent the opening thereof, a folder rod mounted on said feeder, a spring-operated resilient folder arm and yielding folder mounted on said rod, and means to operate said folder to complete the diamond fold when engaged by said tuckers, and means to paste and seal the bag bottom.

1. In bag machines, cooperating opening rolls to receive abag tube, grippers mounted in said opening rolls to engage and hold the bag lip and flap, tuckers, tucker rods secured to said tuckers and mounted on said opening rolls, means to intermittently cause said tuckers to enter the side tucks of the dia mond fold, a disk feeder cooperating with said opening rolls and provided with means to engage the bag portion released by one of said grippers, and resilient folding means to complete the diamond fold when engaged by said tuckers.

5. I11 bag machines, cooperating opening rolls to receive a bag tube, grippers mounted in said opening rolls to engage and hold the bag lip and flap, tuckers on said opening rolls to enter the side tucks of the diamond fold, a disk feeder cooperating with said opening rolls and provided with means to engage the bag portion released by one of said grippers and resilient folding means carried by said feeder to complete the diamond fold when engaged by said tuckers.

6. In bag machines, a roll provided with gripping and tucking devices, means coiipen ating with said roll to open the end of a bag held thereby, a .disk feeder cooperating with said roll and provided with means to engage the bag port-ion released by one of said gripping devices and resilient folding means pivotally mounted on said feeder to engage and complete the diamond fold of a bag held by said roll.

7. In bag machines, means to receive and extend the end of a bellows folded bag tube, tuckers to enter and form the side tucks of the diamond fold of said tube end, a feeder to engage and feed the bag and a resilientspring-acting folder mounted on said feeder to engage and complete the diamond fold of the extended bag tube.

8. In bag machines, means to receive and extend the end of a bag tube, a narrow rotary feeder cooperating with said means, a spring-acting folder having a flexible working face pivoted on said feeder and means to swing said folder quickly into engagement with the open bag tube to form the diamond fold therein.

9. I11 paper bag machines, means to receive and extend the end of a bag tube, movably mounted flexible folding means having a convex working face and spring actuating devices to quickly bring said folding means into engagement with the extended bag tube to complete the diamond fold therein.

10. In bag machines, means to receive and extend the end of a bag tube, flexible folding means swingingly mounted and devices to quickly swing said folding means into engagement with said open bag tube to complete the diamond fold therein.

11. In bag machines, means to receive and extend a bag tube end, a disk feeder cooperating with said means and entering the tube end between the adjacent edges thereof and spring-acting folding means mounted on said feeder to strike and complete the diamond fold in said extended tube end.

12. In bag machines, means to receive and extend a tube end, a narrow rotary feeder cooperating with said means and entering the tube end and resilient folding means mounted on said feeder to engage and complete the diamond fold in said extended tube end.

13. In bag machines, means to receive and extend a bag tube end, a feeder cooperating with said means to feed said tube and yielding folders mounted on either side of said feeder and provided with convex working faces to engage and complete the diamond fold in said extended tube end and to feed the same forward.

14. In bag machines, means to receive and extend a bag tube end, a narrow rotary feeder cooperating with said means, a folder rod mounted in said feeder, spring-acting yielding folding means mounted on said rod and means to operate said folder rod to cause said folding means to engage and complete the diamond fold in the extended bag tube end.

15. In bag machines, an opening roll provided with relatively movable impaling gripping means and devices to move said means into engagement with the seam portions of a bag tube to prevent the separation thereof while the tube is being extended.

16. In bag machines, cooperating opening rolls having impaling gripping means to engage and hold a bag tube end and an impaling retainer cooperating with said rolls to engage the seam laps of said bag tube and prevent the separation thereof.

17. In bag machines, means to receive and extend a bag tube end and an impaling retainer cooperating with said means to en gage the seam laps of said tube end and prevent the separation thereof.

18. In bag machines, cooperating opening rolls provided with gripping means to hold and extend a bag tube end and an impaling retainer needlecooperating with said rolls to engage the seam laps of said bag tube and prevent the separation thereof.

19. In bag machines, opening rolls having gripping means to engage and extend a bag tube end, a feeder entering the tube end between the edges thereof and gripping and feeding the same forward, and folding means to strike and complete the diamond fold in the extended tube end.

20. In bag machines, opening rolls having grippers to engage and extend a bag tube end, a disk feeder in engagement with one of said rolls to enter the bag tube between the adjacent edges thereof and folding means cooperating with said rolls to engage and complete the diamond fold in the extended bag tube.

21. In bag machines, cooperating opening rolls, means thereon to engage and hold a bag tube and a swinging impaling retainer mounted adjacent to and cooperating with one of said opening rolls to engage the seam laps of the bag tube and prevent the separation thereof.

22. In bag machines, cooperating opening rolls provided with gripping means to engage and hold a bag tube, a swinging impaling retainer mounted opposite to and 00- operating with one of said opening rolls to I the same speed as the cooperating portion of said opening roll While said retainer is in engagement with the bag tube thereon.

WILLIAM LIDDELL.

engage the seam laps of said bag tube end Vitnesses: and prevent' the separation thereof and HARRY L. DUNCAN, means to move said retainer at substantially 1 Jnssm B. KAY. 

